Gas-engine



(Nn ModeL) I 2 SheetsSheet 1. J. s. 001). GAS ENGINE.

' Patented May 24, 1887.

WITNESSES MENTOR 'WZ %imr 1 W Jr ' 2 SheetsFSheet 2. J S. WOOD.

GAS ENGINE.

(No Model.)

Panted May 24, 1887.-

JKJMZ W? B) Z a Arm/Mrs.

U ITED STATES PATENT OFFICE.

JOSEPH S. \VOOD, OF BROOKLYN, NEWV YORK.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 363,497, dated May 24, 1887.

Application filed December 7, 1885. Renewed April 22, 1887. Serial No. 235,801. (No model.)

To aZZ whom it may concern:

Be it known that I, Josnri-i S. Wool), of Brooklyn, in the county 'ofKings and State of New York, haveinvented certain new and use ful Improvements in Gas-Engines, of which the following is a specification.

This invention relates to improvements in gas-engines of that class in which a mixture of gas and air is drawn into the cylinder by the outgoing stroke of a piston and then exploded, so that the piston ,is moved forward to its full length by the motion imparted to the drivingshaft.

The object of the invention is to simplify the construction of this class of engines and improve the operating parts by preventing any escape of the gas and air mixture on the open ing and closing of the valves and reducing the noise of the explosions; and the invention consists ofa cylinder the head of which is provided with a supply-port for the gas and air mixture and an ignition port, which ports register at the proper time with similar ports of a laterally-reciprocating slide-valve and with ports ofa transverse guidepiece of the head. The head of the cylinder is further provided with a regulating air-port having an interior checkvalve for the additional supply ofair required for combustion. A transverse channel at the inside of the head connects the air and gas mixture to the ignition-port, so as to form a mixing chamber and facilitate the explosionof the gas and air mixture in the cylinder.

In the accompanying drawings, Figure 1 represents a side elevation of my improved gas-engine. Fig. 2 is a plan; Fig. 3, an end elevation of the same; Fig. 4, an end view of the cylinderhe'ad drawn on a larger scale. Figs. 5, 6, and 7 are vertical transverse sections of the cylinder-head, respectively on lines 00 x, 3 y, and z 2, Fig; 4; and Fig. 8, a vertical transverse section of the cylinder on line 0 c, Fig. 5.

Similar letters of reference sponding parts.

A in the drawings represents the supporting-frame of'iny improved gasengine; B, the cylinder, and B the head, which is screwed tightly to one end of the same. The cylinder 13 is open at the opposite end for the pistonrod 0, which is connected to a crankshaft, D, having a fly-whecl, D. The head B has a indicate corretransverse recess, 1), and a transverse guidepiece, B that'serves to guide a laterally-reciprocating slide-valve, E, which is pivoted to thelonger arm of a fulcrumcd bell-crank lever,

E, the shorter arm of which is pivoted by a connecting-rod, E", to the T-shaped head ofan oscillating arm, E, that is pivoted to the frame A, as shown in Fig. 1. The opposite end of the T-shaped head of the oscillating arm E is provided with an anti-friction roller, e, that is held in contactwith an eccentric cam, E, of the driving-shaft D, by a spiral spring, 6, attached to the arm E and the frame A,as shown in Fig. 1. The cam E" operates the slidevalve E by the intermediate mechanism de scribed, and imparts the required motion thereto. The transverse guidepiece B is provided with a gas and air inlet port, b, which opening registers with a corresponding opening, if, of the slide-valve E, and an opening. If, in the head of the cylinder. The gas and air ports are connected with a gas-supply pipe, F, by an intermediate valve-casing, F, having a perforated diaphragm, f, the opening of which is closed by a checlcvalve, f, when the explosion takes place. 0

The valve'casing F connects by a smallpipc, f", with the inlet ports b" 12' b the end of the pipe f being ground otl and accurately fitted to the slide-valve E, so that the latter closes the same and prevents the escapcof gas through the air supply port f when the port I) of the valve is not in register with the ports b'b". The small gas-supply pipe f is surrounded by a larger airpipe. F having an air-supply port, f, through which the air is drawn into the cylinder with the gas. Through the gas and air ports I), L, b andf the gas and air are drawn in by the suction of the piston when the same is in its outgoing stroke, while when the same is in its return-stroke the products of combustion are ejected through said ports and the port f to the atmosphere, the gas-check valve f being then closed by the pressure of the gases of combustion on the same, so as to pre vent the waste gasesfroui passing into the regulating gas-bag.

The guide-piece B slide-valve E. and head B are provided sidewise of the gas and air inlet ports with coinciding ignition-ports dd" (i as shown in Figs. 4 and 7. The port d is closed at the inside of the head B by a checkvalve, d that closes the ignition-ports at the moment when the explosion takes place.

Below the ignition-port dan ignition-burner, d, is arranged, the flame of whichis sucked in at the moment when the ignition-ports d d" d are in register with each other, so as to ignite the air and gas mixture in the cylinder and cause the explosion of the same. A chimney, (Z is attached to the guide-piece l3 vertically above the slide-valve, to exert a draft on the ignitioufiame. The cylinder-head B is further provided above the slidevalve E with an auxiliary airsupply port, a, that has at the inside a check-valve, a, and at'the outside a fulcrumed slide-piece, a having a perforation, a", at one end, which registers with the auxiliary airport a, while the pointed opposite end of the adjustable slide-piece a may be adjusted along a scale, (shown in Fig. 4,) so

' that the slide-piece a can be set for opening partly or entirely the airport a, and supply thereby the required extra quantity of air to the gas and air mixture in the cylinder to produce the complete combustion of the same.

Across the inlet-port b at the inside of the head B, extends a sheet-metal plate, 9, that abuts by one end against the wall of the cylinder, while the other terminates near the ignition-port d. The plate gformswith the head B a mixing-chamber for the gas and air supplied by the ports I) b b and as a channel for conducting the gas and air mixture to the ignition-opening. The plate g also serves to deaden to some extent the noise of the explosion, as it acts as a kind of shield for the inlet-ports at the moment of the explosion.

The operation of the engine is as follows: The burner is lighted and the fly-wheel of the engine turned once or twice by hand. WVhen the piston commences its outgoing stroke, the inlet-port b of the slide-Valve E is in register with the inlet'ports b b of the cylinder-head B and guide-piece 13", so that the air and gas mixture can be sucked into the interior of the cylinder. The air and gas as they enter into the cylinder are intimately mixed in the mixing-chamber formed by the plate 9, and are ignited at the moment when the ignition-port d of the slide-valve registers with theignition-ports d and d of the cylinder-head and guide-piece B XVhen the ignition of the air and gas mixture takes place, the inlet-port of the slide-valve is not in registerwith the ports of the head and guide-piece, so that no gases of combustion pan escape. By the outgoing stroke of the piston the additional quantity of air required for the combustion of the air and gas mixture is sucked in through the auxiliary air-port a. Thecheck-Valves of the auxiliary air-port and ofthe ignition-port are closed by the pressure of the products of combustion, so as to prevent the escape of any part of the same through said ports. On the return stroke of the piston the products of combustion are exhausted through the i nlet-ports b I2 I), and f while simultaneously the check-valve f closes the opening in the diaphragm of the valve-casing, owing to the pressure of the products of combustion on the check-valve. By

the force of the explosion the piston is moved forward, so as to complete its stroke and carry the crankshaft over its dead-point, it being returned by the fly-wheel, so that the products of combustion can be exhausted. On'the return motion of the slide-valve the inlet-ports are placed in register again, so that on the outgoing motion of thepiston a new charge of gas and air is sucked in again, which is exploded at the proper time, and so on, imparting thereby rotary motion to the driving-shaft.

The advantages of my improved construction of gasengine are, first, that all the ports are located at the head of the cylinder and none in the cylinder itself, whereby the cleaning and repairing of the same is facilitated, as

access is given to all the ports on removing the head; secondly, a more thorough mixing of the air and gas takes place in their passage to the cylinder by the plate or shield that extends transversely over the inlet-ports of the I cylinder-head; and, thirdly, that by the auxiliary air-port and its regulatingslide the exact quantity of air can be supplied to the gas and air mixture, according to the kind and quality of gas supplied to the engine, whereby a more perfect combustion of the explosible gas and air mixture takes place.

Having thus described my invention, I claim as new and desire to secure byrLetters Patent 1. The combination of a cylinder, a cylinder-head having, a transverse guide-piece, a lateral1y-reciprocating slide-valve guided by the head and guide-piece, said head, slidevalve, and guide-piece having gas and air iulet ports and ignitionports, and a transverse plate or box extending over the inl'etport at the inside of the cylinder-head, so as to form a mixing-chamber for the air and gas, substantially as set forth.

2. The combination of a cylinder, a cylinder-head having an exterior guide-piece, a laterally-reciprocating slide-valve, gas and air inlet ports, and ignition ports arranged in said cylinder-head, guide piece, and slide-valve, and an auxiliary air-port arranged in said head and provided with an interior check-valve and an exterior regulating device, substantially as set forth.

3. The combination of a cylinder, a cylinder-head having a transverse guide-piece, a lateral]y-reciprocating slide-valve, gas and air inlet ports and ignitionports arranged in the guide-piece and slide-valve and cylinder-head, a gas-supply pipe having a partitioned valvecasing and check-valve, an air-pipe having an airport, and a gas-pipe extending through the air-pipe to the slide-valve, whereby the slidevalve cutsoif the gassupply at the moment when the inlet-ports are out of register, sub stantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

Witnesses: JOSEPH S. \VOOD.

PAUL Gonrnn, SIDNEY MANN. 

